Mercurial > gemma

annotate pkg/controllers/surveys.go @ 2129:8f6345ad5f13

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Extend /surveys/ endpoint to include reference gauge * Add a subselection to the sql query in models/surveys.go which similiar to the `bottleneck_geoserver` view assumes that the reference gauge is the same for each survey result. * Maintain rights infos.
author Bernhard Reiter <bernhard@intevation.de>
date Wed, 06 Feb 2019 15:44:55 +0100
parents 056a86b24be2
children 7267f8168176
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rev   line source
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2018, 2019 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Sascha Wilde <sascha.wilde@intevation.de>
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13 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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14 // * Bernhard Reiter <bernhard.reiter@intevation.de>
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15
812
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16 package controllers
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17
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18 import (
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19 "database/sql"
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20 "net/http"
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21
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22 "gemma.intevation.de/gemma/pkg/models"
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23 "github.com/gorilla/mux"
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24 )
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25
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26 const (
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27 listSurveysSQL = `
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28 SELECT
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29 s.bottleneck_id,
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30 s.date_info::text,
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31 bg.objname AS gauge_objname
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32 FROM
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33 ( SELECT * FROM waterway.bottlenecks AS b, waterway.gauges AS g
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34 WHERE b.fk_g_fid = g.location
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35 ) AS bg
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36 JOIN waterway.sounding_results AS s
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37 ON bg.id = s.bottleneck_id
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38 WHERE bg.objnam=$1`
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39 )
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40
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41 func listSurveys(
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42 _ interface{},
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43 req *http.Request,
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44 db *sql.Conn,
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45 ) (jr JSONResult, err error) {
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46
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47 bottleneckName := mux.Vars(req)["bottleneck"]
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48
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49 var rows *sql.Rows
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50
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51 rows, err = db.QueryContext(req.Context(), listSurveysSQL, bottleneckName)
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52 if err != nil {
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53 return
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54 }
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55 defer rows.Close()
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56
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57 surveys := []models.Survey{}
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58
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59 for rows.Next() {
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60 var survey models.Survey
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61 if err = rows.Scan(
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62 &survey.BottleneckID,
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63 &survey.DateInfo,
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64 &survey.ReferenceGauge,
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65 ); err != nil {
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66 return
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67 }
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68 surveys = append(surveys, survey)
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69 }
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70
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71 if err = rows.Err(); err != nil {
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72 return
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73 }
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74
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75 jr = JSONResult{
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76 Result: struct {
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77 Surveys []models.Survey `json:"surveys"`
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78 }{surveys},
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79 }
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80 return
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81 }